Glass-forming machine



Patented .lune E9, 192%. l i. i i i i -UN1TED STATES PATENT orifice.

ALBERT N. GRANIER, F TOLEDO, OHIO, ASSIG-NOR T THE OWENS BOTTLECOMIPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

GLASS-11031111116? MACHINE.

Application filed May 9, 1924. Serial No. 712,140.

My invention relates to machines for blank mold, funnel guide andblowing head, 55 forming bottles or other hollow glass artithe blowinghead being moved to one side cles. More specilically. it relates to aglass of the mold. blowing machine of the type in which a Figure i is asimilarview showing the 5 charge of molten glass is introduced intoblowing` head brought to position over the an inverted blank moldthrough the open mold, the parts being in position for blow- 60 upperend of the mold, after which said end ing air downward to compact glassin the is closed by a head or plate` the blank oi? mold.

' glass blown to the form of the mold by Figure 5 is a view similar toFigure 4,

air supplied through the lower end of the but with the parts in positionfor blowing mold, the blank mold then Opened, a. nair upward through theneck mold. 05

ishing mold closed around the blank, and Figure 6 is a view similar toFigure 4.,

the latter blown to its nal form in the OH 2L larger SCHfle, portion ofthe mold finishing mold. being broken away.

In practice, it is found necessary to have Refering particularly toFigures 1 and the blank mold cavity of substantially 2, the machinecomprises a stationary cen- 70 larger volume than that of the charge oftral column 10 around which the mold care glass to enable the, glass toreadily and comriage 11 rotates. Mounted on the carriage pletely enterthe mold, As a. result, when are units, each comprising a body blank theblank is blown up in the mold. there mold 12, a neck mold 13, afinishing mold is formed a cavity of considerable size in '14, andmechanism for opening and closing 75 the blank. In short, the blank isblown to the molds and performing other operations a hollow form. Whensuch a hollow blank incident to the fabrication of the bottles. is blownin the finishing mold, there is an Above eeCll blank mold iS a plate 15car-- uneven distribution of the glass in the side rying a funnelcguide16 and a blowing head walls 0f the bottle 0r other blown article` 17.The plate 15 is mounted to slide radially 30 which gives the finishedarticle a wavy of the mold carriage in guides 18 to bring appemmthefunnel and blowing head alternatively I have found'that by suiiicientlyreducing JC0 a pOSltiOIl over the blank lnold- As the the cavity orbubble formed by blowingy mold carriage rotates, the blank molds are theblank in the blank mold, this waviness brought successively beneath acharger and or uneven distribution' of the glass in the a charge ofglass 19 3) is dropped finished article can be practically eliminated.through the guide 16 into the mold. The

In order to eiiect such a result, thepresent plate 15 is then movedradially outward to invention provides a blowing head conbring theblowing head over the mold.

structed and adapted to close the upper- 'Ihe blowing head comprises acylinder 90 end of the blank mold and supply air under 21 in which worksa piston 22. Depending pressure to compact the blank in the mold, fromthe piston 22 is a cylindrical core or in combination with a plug orhead of a extension 23, to the lower end of which is size and shape toenter the upper end of connected a mold capacity reducing inemthe blankmold cavity and thereby reduce ber herein shown as a plug or head 211the space left for expansion of the glass adapted to enter the upper endof the openin the mold. ing'25 ot the blank mold cavity. The plug Otherfeatures of the invention will-ape 24 is preferably removably secured tothe 45 pear hereinafter. Certain features herein part l23 in anyapproved manner, the conset forth are disclosed and claimed inv mynect'ing means herein shown comprising` 100 (zo-pending application,Serial Number balls' 9 (Fig. 3) which engage an annular 481,070,y filedDecember 16,1920. groove in the stem 7 of the plug 2li and In theaccompanying drawings: y are held in position by a sleeve S. The walls50 Figure 1 is a part sectional elevation olf of the .opening 25 arepreferably tapered to a portion of a bottle blowing machine emassist inguiding the glass in to the mold, bodying the present invention. and thehead 211 is correspondingly tapered Figure 2 is a top plan view ot thesame. and formed with an annular .shoulder 26 Figure y3 is ay sectionalelevation of a to seat on the mold. Surrounding the core 23 is anannular-piston 27 vformed with a cylindrical downward extension 28. Whenthe blowing head is moved to a position over the mold, as above noted,air under pressure is admitted through a pipe-29 to the cylinder 21between the pistons 22 and i Y 27. The piston 27 is Vthereby moved down-Y the air trom the pipe 29 to pass downward` ward until lthe extension2S rests on the mold. This opens passageways or channels 31 pastthegpiston 27, thereby perinitting as indicated by the arrows in Figure6 and f apply pressure on the glass. VThis compacts the glassin theblank mold and neck mold and forms the neck of the'bottle. At this time,the neck mold plunger 32 is in its upward position (Fig. 4:) so as toform an initial blow opening in the blank.

A pipe 33 leadingy trom the upper endet the cylinder 21 is open toatmospheric. pres-- sure during 'the above blowing operation. This pipe33 is now connected to the air pressure so that the piston 22 is forceddowni. mold is quite small.

AVward, causing the head 2li to enter and close ythe mold cavity, asshown in Figure V5.

Atthesaine timegthe airpressure is admitted througli a branch pipe 34sto the'cylinder ot a piston motor 35 (Fig. 5) which thereby withdrawsthe plunger 32. Air is also admitted through ports 36 to the neck mold,Aso thatvthe glassris expanded orv blown in the blankmold. As the head 24Vwhen it enters the blank moldV fills up Vmost ol the vacant-spaceabove'the blank, there is but little room `tor expansion of the glass,Vso tliat'the air space,v or, cavity 37 (Fig. 5) in the blank tion ofits length.` iilhen a blankofthis form is blown in the finishing mold,there is an even'distribution o ythe glass in the side walls of theblown article, so that the glass is vtree from the wavinesscharacteristic of an article blown lom a hollow blank.

Acheck valve 38 (Fig. 5) prevents the escape of air through the pipe29while pressure is maintained inthe pipe' 38. Alfter the blankhas beenblown, the pipe 33 is. again opened to the atmosphere and air blank 19is solid throughout the greater por- Y pressure sup lied through a pipe39 beneath the piston 2 'so that the latter is raised,

' rvcarrying with it the piston 22 and thereby restoring the parts ol"the blowing head to theV Figure 3 position.v The blank mold is nowopened, leaving the bare blank supported in the neck mold which is theninverted to swing the blank downward. The linishing mold 14 new 'closesaround the blank which is blown therein to its finished form. The airsupply to the blowing head through the pipes, 29, 33 and 39, iscontrolled from avalve box 40, having valves 41 actuated byr a series ofstationary cams 42 on the mold carriage. These cams operate the 'valvesthrough levers 43. The construe-,-

In other words,l the tion and operation ofl the valves 41 `and theiractuating mechanism -maybe substantially the same as like partsdisclosed, tor example, Y in Yco-pending application, Serial A'Number''Y 7D f Y with channelways for conduct-ing air tothe mold after impact,a mold closing device comprising a plug-having an external difameterjless than the Vdiameter of the mold cavity, means to causethe'plugto enter the upper endofthe mold after the glass has beencompacted therein, and-means to supply. air pressure through theopposite end Y' of. the mold and blow the glass therein. p 2. ln a glassblowing machine, the combination ota mold openat itsfupper end to`receive a charge ot lass means to a l air Y under pressure tothe openend ofthe mold and thereby compact the glass in the mold,

means. associated with thev said' means toV make a yieldable connectiontherewith and the inold, and being formed with conduitsV for conductingair` to the inoldafterthe connection is made, a mold closing deviceVcomprising a plug having anv external dh aineter less than said mold,means to cause the plug to enter the upper end of the mold i' after the`glass has been compacted therein, means to supply. air pressurethroughthe opposite end of the mold and blow the glass'V therein, andafinishing mold to which the blank ot glass is transferred and' in whichvthe blank is blown to finished forni.

3. In a glass blowing machine, the combination ol a blank mold openatits upper end to receive a charge of glass, a blowing headV movable intoregister with the upper end of the mold, air operated means for causinga tight contact between the mold and said' blowing head andsimultaneously causing said air to enter the mold, means to supply airpressure through said head .to-compact the glass in the mold, means totheny reduce the air space within the mold, and `means to blow the`glass through the opposite end of the mold after said space has beenre-- duced. O

a. In a glass blowing machine, the combination of a blank mold open atits upper -end to receive a kcharge of glass,V means for supplying airunder pressure through said end of themold to compact the glass therein,

compressed air means :tor effecting a tight .130

connection between the mold and the said means and deadening the jarbetween said part-s upon impact, said `means simultaneously with theimpactetlecting a discharge of said airto the mold, a filling plug toenter said end of the mold, and means to supply air through the oppositeend of the mold and blow the glass while said filling plug is in themoldy5. 1n a glass blowing machine', the combination of a blank mold openatits upper end to receive a charge ot glass, a blowing head movable overand into register with the mold, meansY to bring said blowing head intocontact therewith and kcomprising an air'cushion to reduce the jarbetween said parts upon impact, said means formed with channelways forfilling the mold with air after the said contact is made, and a moldcapacity reducing member carried by said head and movable into the mold.

6. In a glass blowing machine, the combination of a blank mold open atits upper end to receiveya charge of glass, a blowing head movable intoengagement with the mold, a piston in said head, and a mold capacityreducing element carried by said piston and movable thereby into themold.

7. In a glass blowing machine, the combination of a blank mold open atits upper end to receive a charge of glass, a blowing head movable intoengagement with the mold, a piston in said head, a plug carriec by saidpiston and movable thereby into position to enter the mold cavity andClose the end of the mold, and means for supplying air pressure throughthe lower end of the mold.

8. In a. glass blowing machine, the combination of a blank mold open atits upper end to receive a charge ot' glass, a blowing head movable intoand out of engagement with said end of the mold, means for supplying airpressure through said head to compact the glass in the mold, a pistonwithin said head, and a mold closing plug car-- ried by the piston andmovable thereby into aosition to enter the mold cavity, said plug beingshaped to till and close the upper portion of the mold cavity.

9. In a glass blowing machine, the combination of a blank mold open atits upper end to receive a charge of glass, a head comprising acylindrical casing, a piston therein, a stem depending from the piston,a sleeve member within said casing and having a telescoping connectiontherewith, said member movable into and out of enga-gement with themold, and a plug carried by said Stem adapted to enter the mold cavity.

10. In a glass blowing machine, the combination of a blank mold open atits upper end to receive a charge of glass, a head comprising acylindrical casing, a piston there in, a stem depending from the piston,a

sleeve member within said casing and having a telescoping connectiontherewith, an annular piston carrying said sleeve member and surroundingsaid stem, means for supplying air under pressure between said pistons,thereby moving the sleeve member into engagement with the mold andsupplying air pressure to the mold, means to supply air pressure abovethe first mentioned aiston, to actuate it and cause said plug to enterand close the upper end of the mold, and means :for supplying airthrough the lower end of the mold 'lor expanding the glass therein.

11. A glass blowing machine comprising, in combination, a mold open atone end to receive a charge ot glass, a blowing head movable intoposition to supply' air pressure at said open end of the mold, meansassoci ated with said blowing head to cushion the impact between saidblowing head and mold, said means formed with channels for conductingair to the mold after said impact,

and a mold capacity reducing device carried by said head.

12. A glass blowing machine comprising, in combination, a mold open atone end to receive a charge of glass, a blowing head movable intoposition to supply air pressure at said open end of the mold, fluidpressure means to make a cushioned contact ot the blowing head with thesaid mold, and a mold capacity :reducing device within said head andmovable therein into position to enter said end ofv the mold.

13. A glass blowing machine comprising, in combination, a mold open atone end to receive a charge of glass, a motor comprising a cylinder andpiston, a plug carried by the piston and moved thereby into and out ofsaid open end of the mold, and a second piston providing means forestablishing a cushioned contact between the said mold and the saidmotor.

14. A glass blowing machine comprising, in combination, a mold open atone end to receive a charge of glass, a motor comprisying a cylinder andpiston, a plug carried by the piston and moved thereby into and out ofsaid open end of the mold, and means for directing air under pressurethrough said cylinder into the mold.

15. A glass blowing machine comprising,

'in combination, a mold open at one end to receive a charge of glass, amotor comprising a cylinder and piston, a plug carried by the piston andmoved thereby into and out of said open end of the mold, means forsupplying air under pressure to said cylinder and directing it into themold, and means tor supplying air pressure to actuatc said piston. y

16. A glass blowing machine comprising, in combination, a rotary moldcarriage, a blank mold thereon, a blowing head, a carrier on which saidhead is mounted, said ear-V lier shl'ftable on the mold carnage tol'nove blank mold thereon,` e blowing head', a carrier on whichsaldfhead s lnounted5 said carrler shlftable on lthe mold carnage tomove-said` 'headl Into and out of a posltlon jover the mold, means forsupplying Vair under pressure Vthrough sald head to the mold, a moldClosing plug` mounted n said head, 'and means tovmove Vsald plug down-Wardly Vand cause it to enter the mold cavity aftersaid supply Vof artothe mold. V'18. A glass blowing machine comprising,

n combination, a rotary mold Carriage,v aV

blank mold thereon, a blowing head, ,a car-VV rier on which said head islnountecha funnel guide on said carrier, mea-ns to shift theCarrergrad-ially of the mold oarrage,to. bring sa1d gulde and bloWlngheadalterplug carried by said blowing head, and means to move theplugyerteally down- AWard into the mold.Y f Y Signed at Toledo, n theCounty of Lucas Vand 'Ste-teef Ohio', this 7th Aday of May,

1924. ,Y L t Y 'Y ALBERT u. CRAMER. Y

Anatively into a position over thev mold, a

